Hyper-v failed to restore with error

November 23, 2022

Today (23rd November 2022), after applying a Windows update, I started a VM that I regularly run for development, and received this error:

Failed to Restore with Error

Failed to restore with Error: ‘The computed authentication tag did not match the input authentication tag.’

Sadly, there was very little information online, however, I did find one article where the guy essentially re-created the VM. In the end, this was my solution, too.

When you create a new VM, you can very easily add an existing HDD, and so the process was relatively painless.

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